Game crashes every 2-3 games since v1.5.2

 Could you please help me with the following issue I am experiencing on UT games, playing Squad Battles?:

In a certain random moment, during the match, the game crashes, sending me to the desktop without any further error message.  I cannot see yet a pattern in the moments I experience the crash (the last time I noticed it: I had just shot to goal and the GK had stopped, sending it to corner - commentator was cut at mid-phrase).

It has been happening for the last 2-3 days - I have not had any stability or performance issues for a long time until v1.5.2.

I play on PC through Steam, Windows 11, with an Nvidia graphics card - I can provide whatever additional info is necessary by DM.

Thanks in advance for your help!