Sims 4 Lagging After Update

@Hrrng327  You're right, your current laptop wouldn't handle any more expansion packs very well.  But for £700, you can get a laptop that would handle all current packs on ultra graphics settings with room to spare.

The best model for you will depend in part on how much storage you want on your laptop.  A single 256 GB hard drive will comfortably fit all Sims 4 packs plus all your saves, but it might not also fit other games (depending on their size), or large collections of music, photos, etc.  If you have an external hard drive for these, it's not a big deal, but some people prefer to store everything internally.  So I'm listing options both with small, fast solid state drives (SSDs) and with larger, slower mechanical drives (HDDs).

The lowest I'd go is this setup, for £600.  The Asus has a 256 GB SSD, and the HP has a 1 TB HDD with Intel Optane memory to accelerate it, so it will be faster than a traditional HDD.  Otherwise, these two laptops have the same hardware: a processor that's more than strong enough for Sims 4, and a graphics card that can handle all current packs on ultra settings.  The Nvidia 1050 may not be able to maintain ultra settings as new expansions are released, but high settings should always be fine.

https://www.box.co.uk/FX504GD-E41275T-ASUS-TUF-FX504GD-E41275T_2458989.html

https://www.box.co.uk/HP-Pavilion-15-cx0999na_2485084.html

This HP, for £650, has an Nvidia 1050 ti, which is a bit stronger than the regular 1050.  Its processor is slightly faster than the one in the two laptops above, and it has a 512 GB SSD, which is plenty of storage for most people.  Unfortunately, it's back-ordered, and I don't know how soon you want the laptop to arrive.  But if you can wait, it would certainly be a good choice.

https://www.amazon.co.uk/HP-Pavilion-15-bc508na-Gaming-Laptop/dp/B07V38SGNR

For a bit more, you could get an Nvidia 1650, which is an even stronger card than the 1050 ti.  It may or may not run all future Sims 4 packs on ultra settings, depending on how the game develops (we don't know for sure, of course).  This laptop's processor is a bit weaker than the others, but it's still good enough for the game.  This model comes with a 256 GB SSD for £680, or a 512 GB SSD for £730.

https://www.box.co.uk/FX505DT-AL086T-ASUS-TUF-Gaming-FX505DT-AL086T_2550154.html

https://www.box.co.uk/FX705DT-AU042T-ASUS-TUF-Gaming-FX705DT-AU042T_2561592.html

If you don't want to shop at that particular website, the 256 GB model is £700 on Amazon.

https://www.amazon.co.uk/ASUS-Gaming-R5-3550H-GeForce-Windows/dp/B07S2ZLNS2

If you have any more questions, feel free to ask.