[Bug]: Lags & glitches in nomads game type after last patch

### Describe the Bug

- infinite connection (abort connect) popup after game start;
- successful start may be possible after 3-5 tries
- constant micro-freezes after 5 minutes of the game
- patrolling is broken (works as ordinary movement)
- squad formation is not working - all units are gathering at one spot

### Reproduce the bug

1. Choose nomads game type
2. Pick 4x4 or more players map
3. Pick 10x10 or larger size map
4. Set any teams (nomads not necessary)
5. Use patrol movement

### Screenshots

Not applyable

### Additional context

- no ui or sim mods enabled
- 4x4 players (7 npc bots)
- 10x10 or larger map size
- not necessary to set nomads

Start by reproducing the issue with the nomads game type on a 4x4-or-larger player map and a 10x10-or-larger map, using patrol movement. No files or tests are named, so trace the connection startup, movement, squad formation, and performance paths involved in that scenario. Done means the connection starts reliably, micro-freezes are absent, patrol behaves correctly, and squads form as expected.

Written by the indexing model from the issue text.