Repeated Corrupt Tables and Table Crashes

I have a couple of tables that randomly starting crashing/becoming
corrupt, and I'm not sure what to make of it. Each time I repair the
table, it is only a matter of time until it corrupts again.

I've done a memory test using memtest.sh found online and nothing
extraordinary comes up. I will be attempting a memory test using
memtest86 soon as well.

Assuming that there are no memory problems, what should I be looking
for here, or what is the problem?

Thanks.