When you restart the rig wait for 12-15 minutes before you start Claymore. That freeze also happend to one of my rigs after restart and the only solution for me is to wait before I start miner. It`s unbelivable but that help.
Delay should be only 1 minute at most, there is no need for more than that.
Seriously? It varies widely especially for rigs that have inexpensive CPUs like Celerons and some of the slower Pentium models. Even the i3-7100 takes longer than 60 seconds to complete the boot process and load the purposefully delayed start items.
Any i5, i7 or faster or Ryzen 1500+ should get there in under a minute, true. It also depends a lot on exactly what is installed on each rig, although if it is a true bare bones system without anything other than mining software added, it's probably fine unless it's a Celeron under 3.0GHz.
Overdriventool starts after 10 sek, miner starts 20 sec after logon.
4gb ram, pentium g4560. 13 amd gpu. Ssd.
No problem.