The following might do the trick

Tom speaks more slowly than Bill.

Tom speaks slower than Bill.

That bus goes slower than the other one.

For most of China s modernization drive, electricity consumption has grown faster than output, not slower.

For most citizens, wages are the only source of income.

But wages have grown at a far slower pace than GDP.

Population growth may not slow down as rapidly as expected.

Software is getting slower more rapidly than hardware becomes faster.

Some of them might be slower than you'd think.

Some of them might be slower than you'd think.

Missing you more than ever.

But that is far slower than in the United States and Britain.

Drive slowly.

Drive slowly.

Speak more slowly.

Speak more slowly.

Walk more slowly.

Speak slower.

Speak slower.

Talk slower.

Talk slower.

The meeting ended earlier than usual.

We walked more quickly than usual.

I arrived later than usual.

I got up earlier than usual.

I got up earlier than usual.

He got up earlier than usual.

He arrived earlier than usual.

She sang better than usual.

You look happier than usual.

Tom looks happier than usual.

Tom spoke louder than usual.

Please speak more slowly.

Speak slower, please.

Sound is less quick than light.

Speak slower, please.

Speak slower, please.

Try to go slower.

Try to go slower.

I can't hear you properly, please speak more slowly.

The Himalayan glaciers have not stopped losing mass, although they are losing it at a somewhat slower rate than before.

But economic recovery everywhere will be weaker and will take longer than expected.

Pneumonia often accompanies many other diseases and traumas.

What do you usually do on Sundays?