<p>I am trying to setup a bitcoin node , ran bitcoin core and it started the download process quite fast ETA 18 hours , gradually the speed decreases .
When I started download it showed like 17 hours ETA, and this continued for around 2-3 hours.
**</p>
<pre><code>Progress Increase Per Hour : 5.5 % 
Estimated time left until synced : 17 hours
</code></pre>
<p>**</p>
<p>after 2 - 3 hours , the progress starts going down .</p>
<p>After 5 hours</p>
<p>**</p>
<pre><code>Progress Increase Per Hour : 0.71 % 
Estimated time left until synced : 5 days
</code></pre>
<p>**</p>
<p>I have enough empty hard disk around 200 GB free, RAM is also 4 GB .</p>
<p>I stopped the download , renamed the Bitcoin download folder and started download again fresh.</p>
<p>Same issue happened , initially the speed remains high but gradually after around 40 GB of download it starts going down drastically .</p>
<p>My configuration are</p>
<pre><code>Prune block storage to : 2 GB
Size of database cache : 2048 MB
Number of script verification threads : 0 
</code></pre>
<p>Is there a bug in bitcoin-core or is it an expected behavior ?  What can I do to speed it up ?</p>

<bitcoin-core><bitcoind>
Bitcoin core initially downloads IBD quite fast , then it slows down a lot , What could be the reason?
Shakti
# Bitcoin core initially downloads IBD quite fast , then it slows down a lot , What could be the reason?

(Asked by: username_0 on 2021-08-06)

I am trying to setup a bitcoin node , ran bitcoin core and it started the download process quite fast ETA 18 hours , gradually the speed decreases .
When I started download it showed like 17 hours ETA, and this continued for around 2-3 hours.
**
Progress Increase Per Hour : 5.5 % 
Estimated time left until synced : 17 hours

**
after 2 - 3 hours , the progress starts going down .
After 5 hours
**
Progress Increase Per Hour : 0.71 % 
Estimated time left until synced : 5 days

**
I have enough empty hard disk around 200 GB free, RAM is also 4 GB .
I stopped the download , renamed the Bitcoin download folder and started download again fresh.
Same issue happened , initially the speed remains high but gradually after around 40 GB of download it starts going down drastically .
My configuration are
Prune block storage to : 2 GB
Size of database cache : 2048 MB
Number of script verification threads : 0 

Is there a bug in bitcoin-core or is it an expected behavior ?  What can I do to speed it up ?

**Tags:** bitcoin-core, bitcoind


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## 0 answers

