As I see now three lagging related bugs are created for Tower of Magic by others:
- https://forum.smallgiantgames.com/t/magic-tower-long-delay-after-attack-or-defense-buff/256795?u=playforfun
- [KNOWN ISSUE] Turn delay on a blessing stack gain (Tower Of Magic)
- Version 44 issues
Are these cover what you see @Shohoku79 ?