to big disk queue during resize or creating VHD

Hi.

I Have hyper-v on windows 2012 R2, witch storage pool (4 disk) na 20 TB thin provisioned volume with deduplication.

On that volume i have one 8TB vhdx file (fixed size). When I try resize that vhdx disk  i got disk queue (on that volume) at about 5-7 with 100% disk activity, and after several minutes i got Event ID 15282 (Filed to resize the virtual disk) and ID 27294.

Its any possibility to limit disk I/O impact during creating or resizing vhd(x) file ? Because looks like the errors occurred when disk queue becomes too high.