diff --git a/source/io/module_eggShell.js b/source/io/module_eggShell.js
index 00c3e8664..979e3c453 100644
--- a/source/io/module_eggShell.js
+++ b/source/io/module_eggShell.js
@@ -110,6 +110,8 @@ var assignEggShell;
         };
 
         Module.eggShell.reboot = publicAPI.eggShell.reboot = function () {
+            // TODO abort all http requests
+            // TODO reset internal jsli functions
             Module.eggShell.delete(Module.eggShell.v_userShell);
             Module.eggShell.delete(Module.eggShell.v_root);
             Module.eggShell.v_root = Module.eggShell.create(0);
diff --git a/test-it/ViaTests/ByValueFunctions.via b/test-it/ViaTests/ByValueFunctions.via
index 6d738de33..613501f16 100644
--- a/test-it/ViaTests/ByValueFunctions.via
+++ b/test-it/ViaTests/ByValueFunctions.via
@@ -1,4 +1,4 @@
-define(HelloWorld dv(.VirtualInstrument (
+start( VI<(
   c(
 //    e(obj(e(.Int32))        v0)
     e(a(.* )                v0DGeneric)
@@ -80,11 +80,4 @@ define(HelloWorld dv(.VirtualInstrument (
 */
 
   )
-) ) )
-enqueue(HelloWorld)
-
-
-
-
-
-
+) > )
diff --git a/test-it/karma/events/ControlEvents.Test.js b/test-it/karma/events/ControlEvents.Test.js
index 29536d8f9..f8feaef7d 100644
--- a/test-it/karma/events/ControlEvents.Test.js
+++ b/test-it/karma/events/ControlEvents.Test.js
@@ -85,6 +85,10 @@ describe('The Vireo Control Event', function () {
         });
     });
 
+    afterEach(function () {
+        vireo = undefined;
+    });
+
     it('registration callback is called on parse and unregister callback on exit', function (done) {
         var registerCallbackExecuted = false;
         var unregisterCallbackExecuted = false;
diff --git a/test-it/karma/http/HttpDelete.Test.js b/test-it/karma/http/HttpDelete.Test.js
index 759bbfdf5..1e3439341 100644
--- a/test-it/karma/http/HttpDelete.Test.js
+++ b/test-it/karma/http/HttpDelete.Test.js
@@ -34,12 +34,15 @@ describe('Performing a DELETE request', function () {
         httpBinHelpers.queryHttpBinStatus(done);
     });
 
-    beforeEach(async function () {
+    beforeAll(async function () {
         httpBinHelpers.makeTestPendingIfHttpBinOffline();
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
         vireo = await vireoHelpers.createInstance();
     });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
     it('with a simple 200 response', function (done) {
         var runSlicesAsync = vireoRunner.rebootAndLoadVia(vireo, httpDeleteMethodViaUrl);
         var viPathParser = vireoRunner.createVIPathParser(vireo, 'MyVI');
diff --git a/test-it/karma/http/HttpGet.Test.js b/test-it/karma/http/HttpGet.Test.js
index 2affff51e..1d20fb0d8 100644
--- a/test-it/karma/http/HttpGet.Test.js
+++ b/test-it/karma/http/HttpGet.Test.js
@@ -40,12 +40,15 @@ describe('Performing a GET request', function () {
         httpBinHelpers.queryHttpBinStatus(done);
     });
 
-    beforeEach(async function () {
+    beforeAll(async function () {
         httpBinHelpers.makeTestPendingIfHttpBinOffline();
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
         vireo = await vireoHelpers.createInstance();
     });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
     it('with a simple 200 response', function (done) {
         var runSlicesAsync = vireoRunner.rebootAndLoadVia(vireo, httpGetMethodViaUrl);
         var viPathParser = vireoRunner.createVIPathParser(vireo, 'MyVI');
diff --git a/test-it/karma/http/HttpHead.Test.js b/test-it/karma/http/HttpHead.Test.js
index 6e76112f5..3d45b8c0b 100644
--- a/test-it/karma/http/HttpHead.Test.js
+++ b/test-it/karma/http/HttpHead.Test.js
@@ -33,12 +33,15 @@ describe('Performing a HEAD request', function () {
         httpBinHelpers.queryHttpBinStatus(done);
     });
 
-    beforeEach(async function () {
+    beforeAll(async function () {
         httpBinHelpers.makeTestPendingIfHttpBinOffline();
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
         vireo = await vireoHelpers.createInstance();
     });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
     it('with a simple 200 response', function (done) {
         var runSlicesAsync = vireoRunner.rebootAndLoadVia(vireo, httpHeadMethodViaUrl);
         var viPathParser = vireoRunner.createVIPathParser(vireo, 'MyVI');
diff --git a/test-it/karma/http/HttpPost.Test.js b/test-it/karma/http/HttpPost.Test.js
index d95733d31..067e68758 100644
--- a/test-it/karma/http/HttpPost.Test.js
+++ b/test-it/karma/http/HttpPost.Test.js
@@ -34,12 +34,15 @@ describe('Performing a POST request', function () {
         httpBinHelpers.queryHttpBinStatus(done);
     });
 
-    beforeEach(async function () {
+    beforeAll(async function () {
         httpBinHelpers.makeTestPendingIfHttpBinOffline();
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
         vireo = await vireoHelpers.createInstance();
     });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
     it('with a simple 200 response', function (done) {
         var runSlicesAsync = vireoRunner.rebootAndLoadVia(vireo, httpPostMethodViaUrl);
         var viPathParser = vireoRunner.createVIPathParser(vireo, 'MyVI');
diff --git a/test-it/karma/http/HttpPut.Test.js b/test-it/karma/http/HttpPut.Test.js
index 10d804e60..852def929 100644
--- a/test-it/karma/http/HttpPut.Test.js
+++ b/test-it/karma/http/HttpPut.Test.js
@@ -34,12 +34,15 @@ describe('Performing a PUT request', function () {
         httpBinHelpers.queryHttpBinStatus(done);
     });
 
-    beforeEach(async function () {
+    beforeAll(async function () {
         httpBinHelpers.makeTestPendingIfHttpBinOffline();
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
         vireo = await vireoHelpers.createInstance();
     });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
     it('with a simple 200 response', function (done) {
         var runSlicesAsync = vireoRunner.rebootAndLoadVia(vireo, httpPutMethodViaUrl);
         var viPathParser = vireoRunner.createVIPathParser(vireo, 'MyVI');
diff --git a/test-it/karma/http/OpenHandle.Test.js b/test-it/karma/http/OpenHandle.Test.js
index 9a3434c08..846dfcfe5 100644
--- a/test-it/karma/http/OpenHandle.Test.js
+++ b/test-it/karma/http/OpenHandle.Test.js
@@ -17,11 +17,14 @@ describe('Running an Open Handle call', function () {
         ], done);
     });
 
-    beforeEach(async function () {
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
+    beforeAll(async function () {
         vireo = await vireoHelpers.createInstance();
     });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
     it('with simple inputs', function (done) {
         var runSlicesAsync = vireoRunner.rebootAndLoadVia(vireo, httpOpenHandleViaUrl);
         var viPathParser = vireoRunner.createVIPathParser(vireo, 'MyVI');
diff --git a/test-it/karma/http/Timeout.Test.js b/test-it/karma/http/Timeout.Test.js
index 378ff71b0..3fa6f103f 100644
--- a/test-it/karma/http/Timeout.Test.js
+++ b/test-it/karma/http/Timeout.Test.js
@@ -28,12 +28,15 @@ describe('Timeout test suite #Slow', function () {
         httpBinHelpers.forceHttpBinQuery('get?show_env=1', done);
     });
 
-    beforeEach(async function () {
+    beforeAll(async function () {
         httpBinHelpers.makeTestPendingIfHttpBinOffline();
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
         vireo = await vireoHelpers.createInstance();
     });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
     it('GET method with timeout 0s times out with httpbin delay of 10s', function (done) {
         var timeout = 0;
         var timeoutEpsilon = 1000;
diff --git a/test-it/karma/javascriptinvoke/Complex.Test.js b/test-it/karma/javascriptinvoke/Complex.Test.js
index d1692a698..4758023dc 100644
--- a/test-it/karma/javascriptinvoke/Complex.Test.js
+++ b/test-it/karma/javascriptinvoke/Complex.Test.js
@@ -15,10 +15,15 @@ describe('A JavaScript function invoke', function () {
         ], done);
     });
 
-    beforeEach(async function () {
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
+    beforeAll(async function () {
         vireo = await vireoHelpers.createInstance();
+    });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
+    beforeEach(async function () {
         // Add functions to exercise JavaScriptInvoke behavior
         window.NI_ConcatenateValue = function (fieldName, value) {
             var returnString = fieldName + value;
diff --git a/test-it/karma/javascriptinvoke/ReturnDataTypes.Test.js b/test-it/karma/javascriptinvoke/ReturnDataTypes.Test.js
index 44196e40b..e40548068 100644
--- a/test-it/karma/javascriptinvoke/ReturnDataTypes.Test.js
+++ b/test-it/karma/javascriptinvoke/ReturnDataTypes.Test.js
@@ -23,10 +23,15 @@ describe('A JavaScript function invoke', function () {
         ], done);
     });
 
-    beforeEach(async function () {
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
+    beforeAll(async function () {
         vireo = await vireoHelpers.createInstance();
+    });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
+    beforeEach(async function () {
         // Add functions to exercise JavaScriptInvoke behavior with parameters of different types
         window.NI_TrueBooleanFunction = function () {
             return true;
diff --git a/test-it/karma/javascriptinvoke/Simple.Test.js b/test-it/karma/javascriptinvoke/Simple.Test.js
index 4e9067a16..98a7ff5d2 100644
--- a/test-it/karma/javascriptinvoke/Simple.Test.js
+++ b/test-it/karma/javascriptinvoke/Simple.Test.js
@@ -34,10 +34,15 @@ describe('A JavaScript function invoke', function () {
         ], done);
     });
 
-    beforeEach(async function () {
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
+    beforeAll(async function () {
         vireo = await vireoHelpers.createInstance();
+    });
 
+    afterAll(function () {
+        vireo = undefined;
+    });
+
+    beforeEach(async function () {
         // Add functions to exercise JavaScriptInvoke behavior
         window.NI_SimpleFunction = function () {
             return undefined;
diff --git a/test-it/karma/systemlogging/SystemLogging.Test.js b/test-it/karma/systemlogging/SystemLogging.Test.js
index ce08d02c7..877cab12d 100644
--- a/test-it/karma/systemlogging/SystemLogging.Test.js
+++ b/test-it/karma/systemlogging/SystemLogging.Test.js
@@ -14,9 +14,15 @@ describe('Performing a system log', function () {
         ], done);
     });
 
-    beforeEach(async function () {
-        // TODO mraj create shared vireo instances to improve test perf https://github.com/ni/VireoSDK/issues/163
+    beforeAll(async function () {
         vireo = await vireoHelpers.createInstance();
+    });
+
+    afterAll(function () {
+        vireo = undefined;
+    });
+
+    beforeEach(async function () {
         spyOn(console, 'error');
         spyOn(console, 'warn');
         spyOn(console, 'info');
diff --git a/test-it/karma/vtrsuite/VtrTestSuite.Test.js b/test-it/karma/vtrsuite/VtrTestSuite.Test.js
index 6d68080b7..56ecb726c 100644
--- a/test-it/karma/vtrsuite/VtrTestSuite.Test.js
+++ b/test-it/karma/vtrsuite/VtrTestSuite.Test.js
@@ -39,7 +39,6 @@ describe('The Vireo VTR test suite', function () {
     var focusTests = {
     };
     var disabledTests = {
-        ByValueFunctions: true // causes hang?,
     };
 
     viaTestConfigs.forEach(function (viaTestConfig) {