Multiple VM - 2nd VM stuttering issue

[Meathelix]

Helllo all, I currently have a issue with running anymore then one vm. If I start up a second vm it stutters and is very slow while the first vm is fine.

I did testing to see if it was that exact vm issue but no, it does it no matter, it just has to be anymore then one vm online for the 2nd one to stutter.

Computer Specs

AMD 16 core 3950x
64G of Ram 3200mhz
3060 Graphics Card
2060 Graphics Card
250G SSD - Proxmox installed on
2TB Nvme Drive - All VM's are installed on

VM Setup

Both VM's are running Windows 10 - One VM has the 3060 GPU Passed while the other has the 2060 GPU Passed. (I have tested disabling GPU and just using Standard, still does it) They both are running 16G each and the CPU is split 8 / 8.

Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   43 bits physical, 48 bits virtual
CPU(s):                          32
On-line CPU(s) list:             0-31
Thread(s) per core:              2
Core(s) per socket:              16
Socket(s):                       1
NUMA node(s):                    1
Vendor ID:                       AuthenticAMD
CPU family:                      23
Model:                           113
Model name:                      AMD Ryzen 9 3950X 16-Core Processor
Stepping:                        0
Frequency boost:                 enabled
CPU MHz:                         3500.000
CPU max MHz:                     4761.2300
CPU min MHz:                     2200.0000
BogoMIPS:                        6999.70
Virtualization:                  AMD-V
L1d cache:                       512 KiB
L1i cache:                       512 KiB
L2 cache:                        8 MiB
L3 cache:                        64 MiB
NUMA node0 CPU(s):               0-31
Vulnerability Itlb multihit:     Not affected
Vulnerability L1tf:              Not affected
Vulnerability Mds:               Not affected
Vulnerability Meltdown:          Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2:        Mitigation; Retpolines, IBPB conditional, STIBP conditional, RSB filling
Vulnerability Srbds:             Not affected
Vulnerability Tsx async abort:   Not affected
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc re
                                 p_good nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_l
                                 m cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_
                                 l3 cdp_l3 hw_pstate ssbd mba ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_
                                 llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeass
                                 ists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov succor smca sme sev sev_es

 

[aaron]

If I start up a second vm it stutters and is very slow while the first vm is fine.

No matter which one is started first?

2TB Nvme Drive - All VM's are installed on

What kind (make, model) is it?

How does the slowness show? Whenever you want to access anything on disk or during normal operation? How do you access the VMs?