[nonnobit]

A good rule is to start a new campaign everytime you change mods; I interpret from your posts most of the time you are trying to reload old game saves that may or may not be synched properly from Ubisoft.

Since you have changed mod conditions so many times 1,2, and 3 plus having problems with savegames are not synched with Ubisoft; I would make sure all mods (if any are enabled at the moment) are disabled. Click on my signature link below and try post #3. Anything help there, especially from the !BACKUP folder errors perhaps?

Yes it's a good idea, it means that you have to choose to mod or to play...
After lots months of patrols and depht-charges, I woun't to restart caimpaign

Ubi savegames don't affect my pc savegames at all: usually I'm offline,just saving online sometimes helped me to reload very old savegames after reinstalling SH5.

No errors in backup folder.

some captains will delete the SH5 documents folder completely. This folder has caused loading problems. IIRC from others, the game will recreate all necessary data for the SH5 document folder

Not my case

Installing a major mod during the patrol/mission can cause this problem too

I'm quite sure it's because I played with mods; I can't realize it's no crash but framerate is affected such way.
Define major mod plz

Here's my actual Modlist:

RemoveLogoIntroTheDarkWraith
hp further distance 5000
1000_Meter_Bearing_Plotter_byTheBeasts1.0
DBSM
MCCD_1.04_ITA
MightyFine Crew Mod 1.2.1 Alt w beards
Messervy_s_gramophone_pack1
Parts Magui V 3.01 by DrJones
Parts Magui Patch 3.02
Enhanced FunelSmoke1.2_by HanSolo78
IO_StrategicMap_4_3_for_Parts Magui Patch V 3.02 by DrJones
Optional Binocular 1
Advanced Shift Keys 1.6
Radio_Messages_1_2_0_German_Voices
Magui pier
silentmichal's interior mod 1.2.4
TheDarkWraith_DC_Water_Disturbances_v2_0_SH5
sobers best ever fog V22 SH5
sobers Lights Cfg V5 SH5
IRAI_0_0_39_ByTheDarkWraith


However, since if I don't accept new u boot command, I can't upgrade sub devices -like enemy will do instead - I saved , and I started new campaign...

I would make sure all mods (if any are enabled at the moment) are disabled

I didn't think about it, I will try

Thanks everyone for help