Rather unlikely.
Unfortunately no.
No, you’re victim to a problem to possibly affect everybody. It’s not due to “regular” overload of OH.
But it’s sort of a generic error that has been observed in a number of different situations.
To find out, first exclude the possibility that it’s due to rules to reload.
Does top show 100+ % CPU for Java ?
Do you change things config, DSL rules ?
Cease doing do for some minutes to see if load drops. Bundle changes if you cannot avoid them.
Clear the cache and restart OH. Check if anything from this applies.
Increase debug logging for a start, org.apache.karaf and org.openhab being candidates to get an idea about what’s going on in the system.Increase debug logging for a start.