This is more of a big-picture FYI than a specific bug. I ran the genetic tester overnight, and the program was completely unresponsive in the morning. When I checked the Task Manager, SQX was using between 98-100% of the CPU. I don't have a high-end machine, but I am running it on an Intel i7-8550U 4-core, so it's not a push-over either. Perhaps I was running an extreme case with an initial population of ~1200 strategies, with 12 islands of +100 each, but I thought I should mention the problem. There were about 5400 results at the time the database last updated. I had to end the program and so never got the outputs to know where it ended up.
We are making fixes to avoid this into the next build.
it might also help you to increase the max allowed memory in Performance -> Memory settings. If you have enough memory use 16 or 24 GB.