CPU thread stuck on 100% post full synch (5.5.0) version

[zkbitcoin]

version 5.5.0
env linux
steps:

run wallet (pivxd) till full synch
run htop

[panleone]

Had finally some time to look at this issue and ran some profiling on my PC, results are:
Once wallet is loaded (so after block indexing) the thread which does basically all the job is ThreadMessageHandler subdivided in:
Around ~70% goes in ProcessMessage
and the remaining ~30% almost all in SendMessage

Then around ~82% of all ProcessMessage time is spent in ProcessMessageMasternodePayments + CMasternodeMan::ProcessMessage

... For comparison ~9% of ProcessMessage time is spent on ProcessNewBlock and ~2.5% in handle governance messages

So the bottleneck that stuck cpu is surely processing and sending masternodes data (in particular masternode list + masternode winners)...

Luckily for us the issue will be solved when we release v6.0 since all legacy masternode logic is going to be completely erased.

[nnmfnwl]

I am experiencing like bug with latest version of pivx wallet downloaded here from githbub. Running it on Debian stable. one CPU core starts to become dying after a while by been used by PIVX QT also happening with PIVX D. Sometimes wallet works days correctly and sometimes it falls into bug after a while. building wallet on debian stable is not possible because depends does not include rustc 65 version inside. Debian using still 63 version.