The first issue is an expected behavior by photoshop because it is as per design.
The second issue is a known issue, I request you to follow the link mentioned below and cast your vote on this issue by clicking on me too so that our engineering team is made aware of this ongoing issue.
Please update Photoshop to its latest update for CC 2017.1, which includes the fix for Photoshop CC 2017: TypeTool Slow | Photoshop Family Customer Community
I'm sorry to inform but new version hasn't fixed this problem at all. I'm going back to 2015...
Sorry the update isn't helping yet. Can you confirm that the update did install correctly?
If you goto help > System Info within Photoshop, can you paste the first 10 lines or so of text?
Everything's ok now (after the latest update), thanks for your help Pete.