Add high timeout for lock function

[inc0]

Lock is meant to be waited on. In server case, unfortunately, this means waiting on grpc. This times out on cliend side and throws error. I'm not happy with this solution, it feels hacky. There should be better way to add such timeouts, but this conditional will cause minimal disruption to current behavior of code.

Fixes #2999

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[inc0]

some more testing - introduced other issues