A 1060 6GB or an RX 580 would be a decent and not too costly upgrade for you already.
I wouldn't take any stronger GPU than those though, as otherwise your CPU will start to strongly bottleneck. Even 15W Laptop processors with 4C/8T should trash it in terms of power nowadays, as both the IPC and the clock rates (let's face it, 2.66 Ghz in a desktop processor is very slow by today's standards) have gone a long way since then.
In other words, while you can just upgrade your GPU for now to buy yourself some time, you'll have to brace yourself to upgrade your CPU, and with it your entire platform in the near future. Considering the price hike on Intel CPUs due to the shortages, I'd rather suggest switching to AMD (R5 2600 would be a good choice atm imo) right now even though Intel still has the gaming performance crown.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454 List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/
Free Pc Games thread: https://gamrconnect.vgchartz.com/thread/248138/free-pc-games/1/
