diff --git a/DESCRIPTION b/DESCRIPTION
index d677571..7a343e4 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: adaptest
 Title: Data-adaptive test statistics for multiple testing in high dimensions
-Version: 0.8.5
+Version: 0.8.6
 Authors@R: c(
     person("Weixin", "Cai", email = "wcai@berkeley.edu",
            role = c("aut", "cre", "cph"),
diff --git a/tests/testthat/test-cv_origami.R b/tests/testthat/test-cv_origami.R
index 34f7a2c..87cca27 100644
--- a/tests/testthat/test-cv_origami.R
+++ b/tests/testthat/test-cv_origami.R
@@ -73,7 +73,7 @@ time_seq <- system.time(
 )
 
 if (availableCores() > 1) {
-  plan(multiprocess)
+  plan(multicore)
 }
 set.seed(48915672)
 time_mc <- system.time(
@@ -86,13 +86,13 @@ time_mc <- system.time(
   )
 )
 
-test_that("Multiprocess and sequential evaluation return identical objects", {
+test_that("Multicore and sequential evaluation return identical objects", {
   expect_equal(result_seq, result_mc)
 })
 
 if (availableCores() > 1) {
-  test_that("Multiprocess evaluation is faster than sequential evaluation", {
+  test_that("Multicore evaluation is not much slower than sequential", {
     skip_on_os("windows") # Windows doesn't support multicore
-    expect_lt(time_mc["elapsed"], time_seq["elapsed"])
+    expect_lt(time_mc["elapsed"], 1.2 * time_seq["elapsed"])
   })
 }
diff --git a/vignettes/differentialExpression.Rmd b/vignettes/differentialExpression.Rmd
index 31bea4c..760c079 100644
--- a/vignettes/differentialExpression.Rmd
+++ b/vignettes/differentialExpression.Rmd
@@ -63,8 +63,8 @@ matrix. We demonstrate the necessary syntax for calling `adaptest` below:
 adaptest_out <- adaptest(Y = Y,
                          A = A,
                          W = NULL,
-                         n_top = 25,
-                         n_fold = 3,
+                         n_top = 35,
+                         n_fold = 5,
                          SL_lib = c("SL.glm", "SL.mean"),
                          parameter_wrapper = adaptest::rank_DE,
                          absolute = FALSE,
@@ -139,7 +139,7 @@ object and the popular `airway` data set as an example.
 
 To start, let's load the required packages:
 
-```{r sum_exp, message=FALSE}
+```{r sum_exp, message=FALSE, eval=FALSE}
 library(SummarizedExperiment)
 library(airway)
 data(airway)
@@ -148,7 +148,7 @@ data(airway)
 For simplicity, we'll restrict ourselves to just a random subset of the genes or
 transcripts available from the _airway_ data set.
 
-```{r}
+```{r augment_se, eval=FALSE}
 genes_sub <- order(sample(seq_len(1000)))
 air_reduced <- airway[genes_sub, ]
 ```
@@ -158,7 +158,7 @@ data-intensive procedure, requiring a fairly large sample size. To work with the
 relatively small `airway` data set, we'll simply augment the data by doubling it
 in size in a naive manner:
 
-```{r augment_airway}
+```{r augment_airway, eval=FALSE}
 simple_air <- cbind(air_reduced, air_reduced)
 ```
 
@@ -166,7 +166,7 @@ Now, we can perform the same data-adaptive analysis we discussed above on this
 simplified version of the _airway_ data set, simply by calling the `bioadaptest`
 wrapper function:
 
-```{r}
+```{r bioadaptest, eval=FALSE}
 airway_out <- bioadaptest(data_in = simple_air,
                           var_int = as.matrix(colData(simple_air))[, 3],
                           cntrl_set = NULL,