VMPROTECT3. The disassembly of version 5.1 is dozens of times slower than the previous version

VMProtect
1

Upgrade to vmprotect3.0 Disassembly of some functions after version 5.1 is very slow.
Almost dozens of times slower.

Even in vmprotect3 Adding some functions in the graphical interface of version 5.1 will also get stuck for a long time.
Can you locate the cause and solve this problem.

2

Starting 3.5 VMPrpotect detects noreturn functions while disassembles CALLs and it takes extra time.