pg_stat_statements slows down the database

I have an aws aurora postgresql cluster running posgresql 13.7 engine. The cluster is using the default parameter group. These are the default settings used for pg_stat_statements in the parameter group (i use the default parameter group - this exact one, for other clusters as well). Basically nothing is changed from the default values. I use multiple glue jobs to write to this aurora cluster and I encounter an issue with the pg_stat_statement waits after a couple of runs. If i do nothing about it, the cluster will automatically restart stating that the database processes have been killed due to the long runtime. If i restart the cluster or if i use

SELECT pg_stat_statements_reset();

The pg_stat_statements view gets a reset and everything runs as it should. Note: if the database gets restarted, right after restart i can run the same load (exactly the one that failed) with no issues. Note2: I have another cluster with the same settings (size and parameter group), running the same type of jobs that does not manifest like this. Example run1 - LWLock:pg_stat_statements in blue Example run2 - LWLock:pg_stat_statements in yellow I already adapted my glue jobs to be less stressful for the cluster by lowering the number of dpu's and implicitly running less parralel inserts into it. Any ideas regarding where i should pick this up from are greatly appreciated.