Performance issue in Jabref5.1 using "search" function to find specific records

[Ed-Roumen]

JabRef version

JabRef-5.1.msi

I just installed the new Jabref5.1 to see how it works with my literature.bib database that is about 29,900 Kb in size.
The database loads and shows pretty fast, a major improvement on some earlier 5.1 development versions :-)
However, when I try search on authors, the program seems to enter in a "never-ending loop" and becomes non-responsive whilst at the same consuming 95-97% of my CPU. I experienced the same problem in earlier 5.1 development versions. So I reversed to using "JabRef 5.0-beta.10--2019-12-16--aa6cbb7". In this development version, a search on author(s) is also slow, but the program does not become unresponsive.
Am using Windows10 Pro 64 bit on a Lenovo P700 with Intel Xeon E5-2603 @ 1.6 Ghz and 16 Gb RAM.

I am not a computer programmer and am not sure this is the feedback you need. If you need more technical details from me then please instruct me what I need to do to share these back to you.
Ed

[jhh931]

Same here: my 5.1 version gets unresponsive (or very slow) during searches.

JabRef 5.1--2020-08-30--e023aa0
Windows 10 10.0 amd64
Java 14.0.2

[teertinker]

On my Windows machine I have the same problem. The current JabRef version becomes almost unusable there. After hitting a search term CPU usage goes up to 90% and never drops again.
Jabref5.1 2020-08-30
Windows 10 amd64
Java 14.0.2

On my Ubuntu machine I do not experience any issues with the same version.

[teertinker]

The problem persists in the current master. At the moment, I can't use either JabRef 5.1 oder 5.2 because of this problem. I have to kill (closing jabef is not enough - see picture) the program after each search on my ubuntu and my windows machine.

I did a quick test with the testjabref.bib - it causes the same problem - so its not related to my bib file

Strange, however, that it doesn't affect all users.

[Siedlerchr]

Try disabling Autocomplete in the Preferences, many user reported that this helped

[teertinker]

Wow. That helped immediately! Thank you @Siedlerchr. I hope, auto completion is disabled by default.

[sankayop]

Try disabling Autocomplete in the Preferences, many user reported that this helped

Thanks @Siedlerchr , disabling autocomplete helped directly.
on:
JabRef 5.2--2020-11-19--0412684
Linux 5.9.11-3-manjaro amd64
Java 15.0.1

[maphouse]

Try disabling Autocomplete in the Preferences, many user reported that this helped

Solved for me too, big save

[sankayop]

issue is still relevant