Wow this is impressive, the first laptop I used with Pianoteq had an AMD Turion II Dual-Core Mobile M500 (from 2009), around 2015 I stopped using it with Pianoteq because the performance was poor.
I also had another laptop with a Pentium 2020m (year 2013) which I stopped using in 2017, it was working flawessly at that moment. Your cpu lies somewhere between these two, according with cpubenchmark.net

I can't tell you how many hours I've spent on sites like cpubenchmark, looking up the specs of every tablet on the market and comparing them to my old one to gauge how they'd cope with a full version of Pianoteq 8 along with a few extra plugins and pedals etc!

Asus M70 (c.2009)
CPU: P8400 - Core 2 Duo @ 2.26GHz
4GB Ram
Windows 8.1 64-bit
ASIO4ALL driver installed.
No other plugins or software running during testing.

The ASIO driver worked well at reducing the latency to a very decent level.
The CPU load is around 50-70% during regular piano playing (connected to a full-size 3-pedal digital piano).
I've noticed a small number of noises/glitches in the sound output whilst playing, but otherwise sounds very good.

Running two instances of the software at once, or holding the pedal down and overlapping a lot of notes has encountered the CPU overload error message!

Not too bad for a 14 year old laptop!