Hi!
Consider your monitor's refresh rate (Hz) the maximum fps it can produce. If you computer outputs more fps than the monitor's refresh rate then you will have screen tearing issues.
Since your computer does not reach 144 fps it means it will work fine and you won't have troubles with this.
Answer: No it's not a problem, it's an ideal situation.
Ps: Consider a 120Hz monitor if you don't even reach 120 fps, it would be just as good, but cheaper, or might have better utilities.