Underwater pitch&roll

[papanebo]

Hello all!

I've got the following problem:
On rough seas the boat pitch and rolls as it should. But when i submerge at periscope depth, the rocking continues making the periscope unstable. Is this normal/a feature or is there something wrong?

Here is my mod list:

Magnum_Opus_v0_0_1
Magnum_Opus_Patch_2
Dynamic Environment SH5 Basemod (realistic version) V2.1
Dynamic Environmental SH5 Shallow Waters V2.1
Dynamic Environment SH5 Shallow Waters V2.1 Patch
Dynamic Environment SH5 Waves (realistic version) V2.1
SteelViking's Interior Mod V1.2
SteelViking's Interior Mod V1.2.1 Patch
NOZAURIO'S SKIN (Standar No Emblem) v-1.0.0
Shadow Improvement ModLR
Rel_SH4_BBC_1939_to_1945
DBSM_Music_1_0_4
Trevally Automated Scripts v0.6
Trevally Harbour & Kiel Canal Pilot v2.8
sobers best ever fog V9 SH5
Nauticalwolf's_Damage_and_Torpedo_UI(b)_Mod_v1.1
KZS Hull wetness for U-Boats + co tower and deck_revised_by_TheDarkWraith
Stormys DBSM SH5 v1.3 Basemod
Stormys DBSM SH5 v1.3 HOTFIX 3
FX_Update_0_0_19_ByTheDarkWraith
NewUIs_TDC_6_9_0_ByTheDarkWraith
NewUIs_TDC_6_9_0_jimimadrids_map_tools
NewUIs_TDC_6_9_0_ERM_Reaper7_NightVision_Black_Ski n
NewUIs_TDC_6_9_0_alt_officer_wounded_by_Torpedo
IRAI_0_0_30_ByTheDarkWraith
IRAI_0_0_30_No_hydrophone_on_surface_No_Aircraft_s potting
OPEN HORIZONS II_full v1.8