[Bug] Performance Issues on longer mission / campaigns

[Quantumrunner]

Looks like there is a performance gap for very long missions / campaigns. The performance gets worse and worse the long a game takes.

I have created a video to show this. On my PC there is a very small delay when clicking buttons while the problem is much worse on my android tablet.

Here is a video showing the problem:
https://1drv.ms/v/s!Avgu01I9GTFTgdxpQUi-kwj8biYgLg?e=jxbE4L

The delay is not very long but still visible. The first time I click the continue button is from a new game I had just started a few seconds earlies (entering the city for the first time). The second time I click the continue button is from a save game from mid campaign (about 5 or 6 missions finished).

Scenario

Shadow Rune campaign

Steps to reproduce the behavior:

1. Start the campaign.

2. Skip the first mission.

3. Go to town (check performance for this action)

4. Save game

5. Click through the campaign until 5-6 missions have been finished.

6. Save game

7. Load game

8. Go to town (check performance for this action)

Expected behavior

Performance should not decrease in longer missions.

Also see attached savegame

Savegame

save1.zip

Valkyrie Version

2.5.4

Desktop

• OS: Windows 10