@AlexMay You want Laptop specs, however it's really difficult to tell proper ones because of the large variety of Laptops. They range from 300 Euro to 3000 Euro (not literally, but you get the idea).
You say you have difficulties to open Word while you use OBS as virtual webcam for Teams, as well as starting screen sharing with Teams. However, you didn't write any specs of that laptop of yours, so we have no baseline of what you're talking about.
From what I see, it may be your laptop just has not enough RAM, because Word and Teams needs much memory. On the other hand, starting screen sharing within Teams uses some GPU resources, so your GPU may be not strong enough. But keep in mind this is on a laptop, and you're just using office apps, so any high performance GPU such an Nvidia Geforce/GTX/RTX isn't used in the first place but the iGPU instead. At least by the screen sharing module from Teams. OBS can be ordered to run on the high performance Nvidia GPU, but it isn't clear if this solves anything, because data transfer to and from that GPU might hit a bottleneck as well (data bus performance). This, as well as the iGPU, is a CPU/chipset thing, not a GPU thing.
So it might be possible to optimize your current laptop to make it work. May be it helps if you configure Windows to run OBS on the power saving GPU instead of the high performance GPU. Seems strange, but worth a try. But if you don't have enough RAM, that's probably all in vain. Since you didn't attach a OBS logfile, we cannot know what happens for you.
I just got a not expensive new Laptop for personal use, in case I go travelling. May be it could serve as an example. I bought it for Office use and small computer games. It has a Intel(R) Processor U300 1.20 GHz CPU (that's a 13th gen Intel CPU) and 16 GB RAM. No high performance GPU, just the iGPU. 17" display. Cost: 500 Euro.
Its weakest part is of course the CPU. However, it works quite well for Office use due to the good RAM. I started OBS, its virtual camera, Word, Onenote, Chrome, a screen sharing of Word. The GPU load was 40-80%, the CPU load was 30-70%. All was smooth. So I guess that laptop would be able to run your workload as well, and the laptop you have may have lower system specs.
During research, I found most laptops with either outdated CPU generations or extremely low performance or both. All low budget laptops look the same, but their performance varies greatly. I recommend to compare CPU performance by checking benchmark sites such as
https://www.cpubenchmark.net/.
My U300 has a score of 9245 on that site, I would say one should not choose lower scores for workloads that include video processing such as OBS. Its upside is the reasonably powerful iGPU, so aim for current generation CPUs that come with more powerful iGPUs (AMD is no different here). If your current laptop is older, its bad graphics performance might result from an older iGPU.
Choosing laptops with "high performance GPU" is difficult, because some GPUs are just double the performance than the integrated ones - I would count these as snakeoil, because a really powerful GPU is 5-10 times the power of a iGPU, or even more. I count the Nvidia Geforce MX GPUs as such snake oil GPUs - they're not really making a difference. Either you're buying a office laptop (iGPU only) or a gaming laptop (really powerful GPU), but no chimera.
