Our client is complaining about slow performance of the SERP (server busy messages every now and then, cannot connect to the client and so on).
I can see the following in the log

2017-03-19 23:01:14 /THREAD(15) Duration in seconds: 74
2017-03-20 00:00:46 Iškviesta internetinių raktų funkcija: TheFindIntEnablerAddress
2017-03-20 00:00:47 TheFindIntEnablerAddress = 0
2017-03-20 08:14:53 /THREAD(19) Web file not found: http:/www.17track.net/restapi/handlertest.ashx
2017-03-20 08:35:26 Įeinanti jungtis 192.168.0.10:63753
2017-03-20 08:35:30 AB Prisijungti @192.168.0.10
2017-03-20 08:42:20 AB Atsijungti @192.168.0.10
2017-03-20 08:42:21 SYSTEM Atsijungti 192.168.0.10:63753: the client closed the connection (2)
2017-03-20 08:59:12 Įeinanti jungtis 192.168.0.41:60072
2017-03-20 08:59:14 RS Prisijungti @192.168.0.41
2017-03-20 08:59:30 RS Filtering records on the main thread!
2017-03-20 08:59:31 RS Filtering records on the main thread!
2017-03-20 08:59:31 RS Filtering records on the main thread!

We have adjusted the number of threads in the System>>optional features>>performance, but it did not help. What else we could do?