It may be worth considering if there are faster GPUs available. If your PC is old, or your GPU is on the lower end of capabilities, then replacing the GPU could significantly reduce the amount of downscaling required. Laptop GPUs are generally significantly slower than their desktop equivalent and so using a desktop workstation may be preferable if the quality of the view in the 4D viewer is important to you. Of course, if you already have a workstation with the software installed this may not be a practical solution and in any case, it could be quite expensive. However, as mentioned above, once datasets get larger than a certain size, there are increasingly fewer GPUs that can handle such datasets at full resolution, and beyond a certain size, downscaling is simply inevitable.

Note also that a more expensive GPU may not necessarily be faster. Gaming GPUs are generally just as fast as their "professional" equivalents, but significantly cheaper, with the difference in price coming down mostly to the type and amount of VRAM available and the availability of certified drivers for certain specific applications. As an example, you can get comparable rendering speed from an NVIDIA RTX 4090 as from an NVIDIA RTX 6000, but the RTX 6000 is 4x the price. See our article on recommended hardware configurations for more information.