I don't use the HD4600 IGPU when running Ventura. I use a discrete GPU either an RX580 or Vega 56, as the sole graphics processor, as all Haswell IGPU's lost support/drivers in Ventura.
When running Ventura on this or any similar Haswell system it is essential you install a compatible discrete GPU and change the SMBIOS to a compatible system. Ventura supports Polaris RX400/RX500 or newer discrete GPU's.
My latest setup for this system uses the iMacPro1,1 SMBIOS, a system which also contains and uses a discrete GPU only. My Ventura setup on this system runs with the IGPU disabled in the bios and no IGPU DeviceProperties in the config.plist.
The CPU/RAM/dGPU work fine, not laggy or any issues running Ventura 13.3.1.
So no I do not recommend installing/upgrading to Ventura with the HD4600 IGPU as your sole graphics processor.
For that matter, I would never recommend using OCLP on a Hack. The OCLP developers say not to use their 'legacy Mac' bootloader on a Hack, so I am not going to contradict them.
I also don't recommend just running the Root Patches to enable an obsolete IGPU, as you have to disable too many safeguarding aspects builtin to macOS (SIP, AMIF, SecureBoot etc.) for the root patches to run/work.